Jessica Fesses Up

Hollywood's worst-kept secret is out!

Jessica Simpson took  to Twitter Monday to announce what we all suspected; she's pregnant! The 31-year-old singer tweeted, "It's true – I'm going to be a mummy!" The announcement was accompanied by a picture of Simpson dressed as such while cradling a growing baby bump.

This will be the first child for Simpson and her fiancee, ex-footballer Eric Johnson.